Straight-through flow path. Exclusive expansion chamber dissipates annoying mid-range drone. Flows up to 201% better than stock. Authoritative, but never overpowering, exhaust sound. Polished-stainless steel. 3.5 inch diameter in/out.Monster Exhaust Benefits. Replacing the restrictive stock muffler with Banks free-flowing Monster muffler makes a huge difference in airflow, sound and performance. The Banks muffler has a large inlet and outlet. And in between, the exhaust flows straight through, instead of torturously winding its way back and forth inside hairpin chambers and building up back-pressure. And only Banks Monster muffler has an expansion chamber to alleviate the nasty drone that other straight-through mufflers are known for.Banks utilizes durable ceramic packing with a high temp rating so it won't degrade like fiberglass. Add it all together and you get a muffler that flows over three times better than stock and delivers a pleasing, throaty rumble!

This Part Fits:

Year	Make	Model	Submodel
1998-2000	Ford	F-150	Base
2004	Ford	F-150	FX4
2000-2003	Ford	F-150	Harley-Davidson Edition
2001-2003	Ford	F-150	King Ranch
1998-2004	Ford	F-150	Lariat
1999-2003	Ford	F-150	Lightning
1998-2004	Ford	F-150	XL
1998-2004	Ford	F-150	XLT
2004	Ford	F-150 Heritage	SVT Lightning
2004	Ford	F-150 Heritage	XL
2004	Ford	F-150 Heritage	XLT
1998-1999	Ford	F-250	Base
1998-1999	Ford	F-250	Lariat
1998-1999	Ford	F-250	XL
1998-1999	Ford	F-250	XLT
2004	Ford	F-250 Super Duty	Harley-Davidson Edition
2004	Ford	F-250 Super Duty	King Ranch
1999-2004	Ford	F-250 Super Duty	Lariat
1999-2004	Ford	F-250 Super Duty	XL
1999-2004	Ford	F-250 Super Duty	XLT
2004	Ford	F-350 Super Duty	Harley-Davidson Edition
2003-2004	Ford	F-350 Super Duty	King Ranch
1999-2004	Ford	F-350 Super Duty	Lariat
1999-2004	Ford	F-350 Super Duty	XL
1999-2004	Ford	F-350 Super Duty	XLT